Effect of liquid flow behaviour on performance of corrugated structured packing

被引：0
作者：
Li, Hong [1 ,2 ,3 ]
Yao, Yuebin [1 ]
Wang, Fangzhou [1 ]
Gao, Xin [1 ,2 ,3 ]
Li, Xingang [1 ,2 ,3 ]
机构：
[1] School of Chemical Engineering, Tianjin University, Tianjin
[2] National Engineering Research Center of Distillation Technology, Tianjin
[3] Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin
来源：
Huagong Xuebao/CIESC Journal | 2014年 / 65卷 / 12期
基金：
中国国家自然科学基金;
关键词：
Distillation; Flow pattern; Hydrodynamics; Mass transfer; Seepage flow; Structured packing;
D O I：
10.3969/j.issn.0438-1157.2014.12.016
中图分类号：
学科分类号：
摘要：
Five corrugated structured packings are selected based on different liquid flow patterns including seepage flow and film flow. The hydrodynamic and mass transfer performance are studied in order to explore the effect of liquid flow patterns on the performance of structured packings. The experimental results show that liquid mainly presents a seepage flow in the porous structure of SCFP type packing, which benefits the lateral spreading of liquid and uniform distribution of liquid membrane. The SCFP type packing shows the highest mass transfer efficiency and lowest pressure drop when the F factor is lower. Liquid displays a partly seepage flow in the special structure of DM III type packing, which can promote the liquid exchange between two sides of one sheet and intensify liquid turbulence, increasing mass transfer efficiency and reducing pressure drop compared with DM I and DM II type structured packings. Liquid flows in the form of film on the surface of BX and DM I type packings and this flow pattern results in a high velocity and a short residence time of liquid film. Thus the mass transfer efficiency of BX and DM I type packings is lower than that of SCFP and DM III type packings. This study shows that the structured corrugated packing with seepage flow presents good performance, opening up a new method to develop structured corrugated packings. ©, 2014, Chemical Industry Press. All right reserved.
引用
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页码：4760 / 4766
页数：6
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